Auxiliary air-inlet valve.



J. H. SCHMIDT.

AUXILIARY AIR INLET VALVE.

APPLICATION FILED JULY 26, 1911 nan earner @FFWE,

some n. scanner, or nn'rnoir, mrcnrean, nssreno'n or ONE-HALF r0 cnnr. n. MITCHELL, or nn'rnorr, MICHIGAN.

AUXILIARY AIR-INLET VALVE.

Specification of Letters Patent.

Patented May 28, 19118.

To all whom it may concern Be it known that I, JOHN H. SCHMIDT, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Auxiliary Air-Inlet Valves, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a gas saver for internal combustion engines shown in' the accompanying drawings and more partlcularly set forth in the following specification and claims.

One of the objects of this invention is to provide an automatic or self-adjusting air intake valve, so constructed that air may be taken into the engine manifold above the carbureter in accordance with the speed of the engine, for the purpose of savlng gas, and to increase the engine speed.

Other advantages and improvements will appear as the description proceeds; the 1nvention residing in the combination and arrangement of parts and in the detalls of construction hereinafter described and claimed, it being understood that changes may be made in the precise embodiment as herein shown or disclosed without departing from the spirit of the invention.

In the drawings accompanying this specification,

Figure 1 is a longitudinal sectional view through the device showing it attached to the intake manifold of an engine Fig. 2 is an enlarged longitudinal sectional detail view of the valve.

Fig. 3 is an enlarged sectional v1ew of the perforated cap, carried by the valve casing.

Referring now to the letters of reference placed upon the draw1ngs,-

A, denotes an internal combustion engine, B, its intake manifold.

C, designates a valve casing or mpple threaded to enter an opening in the wall of the manifold.

D, is a cap having a screw-threaded engagement w1th the valve casing and provided with a series of perforations d, for the admission of air.

E, indicates an annular casting or valve formed with an enlarged closed end adapted to seat in the end of the valve casing C, housing the valve. E, is a valve rod projecting through the cap D, and having a screw-threaded engagement with the casting or valve E.

E is a milled nut screwed upon the end of the valve rod for adjusting the tension of the spring F.

G, is a spring actuated plunger or detent carried by the valve casing extending through an aperture provided therein, that it may enter any one of the respective recesses 6, formed in the casting E, to yieldingly hold the latter in its adjusted positions. E denotes a plurality of holes through the wall of the casting E for the passage of air.

Having indicated the several parts by reference letters, the construction and operation of the device will be readily understood.

It is well known that upon starting an internal combustion engine a richer mixture is required than is afterward necessary for its operation; therefore, upon the engine being initially actuated the air inlet valve of my device is held to its seat through the.

tension of the spring F, until the engine obtains a speed of say ten miles per hour, whereupon the suction produced by the intake stroke of the piston serves to unseat the valve and thereby uncover the first. row of holes E through which air passes to the manifold. The valve is thus held open with the first row of holes uncovered through the action of the spring actuated plunger or detent G, which enters the first recess 2, in the annular casting or valve E, causing it to remain in its open position until the speed of the engine increases to Say twenty miles per hour, whereupon the valve is drawn out to a greater extent, exposing another row of holes E the detent G, locking the valve in its second position upon entering the second recess, and so on, as in the manner previously described ;-the valve also the piston, until the speed of the latter is materially increased, whereupon the valve opens to a further extent exposing the next row of ports, and so on until it reaches the maximum opening. By providing a plurality of relatlvely snrall holes E the air is broken up as it enters the manifold enabling it to readily mix with the gas to secure more perfect combustion.

Having thus described my invention, what I claim is:

1. A device of the class described including a tubular valve casing provided at its inner end with a valve seat and having an inlet at its outer end, a tubular valve slidable in the valve casing and provided with an inner closed end forming a head for engaging the valve seat to close the inner end of the valve casing, said tubular valve-being provided intermediate of its ends with apertures arranged to be successively carried be-' yond the valve casing and yieldable means for urging the tubular valve to its closed position.

2. A device of the class described includ ing a tubular valve casing designed to pierce the intake manifold of a combustion engine and provided at its inner end interiorly of the manifold with a valve seat and having an inlet at its outer end, a tubular valve slidable in the valve casing and provided at its inner end with the engaging portion to coact with the valve seat to close the inner end of the valve casing, said tubular valve having apertures arranged to'be carried beyond the valve casing, said tubular valve being also provided at intervals with recesses arranged with relation to the apertures and spring actuated detent mounted on the valve casmg and arranged to engage the said recesses for yieldably maintaining the tubular valve in a plurality of positions.

3. A device of the class described including a tubular valve casing provided at its inner end with a valve seat, a cap mounted on the outer end of a valve casing and havin inlet perforations, a tubular valve slidable in the valve casing and provided at its inner end with a head or portion to coact with the valve seat for closin the inner end of the valve casing, said tubu ar valve being also provided at intervals with apertures arranged to be carried beyond the valve casing, a valve rod extending through the valve and connected at its inner end with the same, said rod being slidable through the cap and provided at the outer end with adjusting means and the spring disposed on the rod and interposed between the cap and the adjusting means.

4'. A device of the class described including a valve casing designed to pierce the intake manifold of an internal combustion engine and provided at its inner end with a valve seat arranged interiorly of the manifold, a tubular valve slidable in the valve casing and provided at its inner end with the portion arranged to engage the valve seat and close the inner end of the valve casing, said tubular valve being provided at intervals with exterior recesses and having spaced perforations arranged to be carried beyond the valve casing, a spring actuated detent located beyond the intake manifold and arranged to engage the said recesses for yieldably maintaining the tubular valve in a plurality of positions and yieldable means for urging the tubular valve toward its closed position.

In testimony whereof, I sign this specification in the presence of two witnesses.

JOHN H. SCHMIDT.

Witnesses:

LEVI L. BAnBoM. S. E. THOMAS. 

